package com.github.cakin.shiro.chapter2.realm;

import org.apache.shiro.authc.AuthenticationToken;
import org.apache.shiro.authc.UsernamePasswordToken;
import org.apache.shiro.authc.AuthenticationInfo;
import org.apache.shiro.authc.AuthenticationException;
import org.apache.shiro.authc.UnknownAccountException;
import org.apache.shiro.authc.IncorrectCredentialsException;
import org.apache.shiro.authc.SimpleAuthenticationInfo;
import org.apache.shiro.realm.Realm;

/**
 * @className: MyRealm4
 * @description: 自定义Realm
 * @date: 2020/5/16
 * @author: cakin
 */
public class MyRealm4 implements Realm {

    public String getName() {
        return "myrealm4";
    }

    public boolean supports( AuthenticationToken token ) {
        return token instanceof UsernamePasswordToken; // 仅支持UsernamePasswordToken类型的Token
    }

    public AuthenticationInfo getAuthenticationInfo( AuthenticationToken token ) throws AuthenticationException {

        String username = (String) token.getPrincipal();  // 得到用户名
        String password = new String((char[]) token.getCredentials()); //得到密码
        if (!"cakin".equals(username)) {
            throw new UnknownAccountException(); // 如果用户名错误
        }
        if (!"123456".equals(password)) {
            throw new IncorrectCredentialsException(); // 如果密码错误
        }
        // 如果身份认证验证成功，返回一个AuthenticationInfo实现
        return new SimpleAuthenticationInfo(username, password, getName());
    }
}
